Adsorption Efficiency Comparison of Activated Carbon Derived from Various Herbs

Abstract

The production of activated carbon from herbs has attracted the attention and interest of many researchers. This is because herbal plants have good performance in the process of removal and recovery of heavy metals. Furthermore, its low cost and availability in large quantities attracted researchers to produce activated carbon from herbs. Herbs are a cheaper, effective alternative to commercial activated carbon for the removal of heavy metals and water-based textile dyes. There are various types of herbal plants used in this experiment, which are neem, curry, moringa and tulasi leaves. Besides that, other adsorbents can also be used such as rice husk, coconut husk and jackfruit skin residue. Activation process consisting of physical and chemical activation is a common method used to produce activated carbon from herbs. These methods may affect both the chemical and physical of the activated carbon obtained from herbs. In this study, the factors influencing the adsorption capacity and adsorption efficiency were observed from the literature review and compare to the experimental results. Current study on activated carbon generated from various herbs and itsactivation methods from herbs are also discussed. The evolution of adsorption has changed from an alternative approach to a proper technique and has many advantages. The adsorption performance is also more satisfactory in terms of adsorption capacity and solves the problem of wastewater pollution in a more economical way. Thus, it is also able to overcome some of the problems of solid waste around the world.